Desktop/xinu_mips-1.0.2.tar/xinu_mips-1.0.2/shell/xsh_exit.c

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/* Embedded XINU, Copyright (C) 2007.  All rights reserved. */

#include <kernel.h>
#include <shell.h>
#include <stdio.h>
#include <string.h>

command xsh_exit(ushort stdin, ushort stdout, ushort stderr,
                 ushort nargs, char *args[])
{
        /* Output help, if '--help' argument was supplied */
        if (nargs == 2 && strncmp(args[1],"--help",6) == 0)
        {
                fprintf(stdout, "Usage: exit\n");
                fprintf(stdout, "Closes the XINU shell.\n");
                fprintf(stdout, "\t--help\t display this help and exit\n");
                return SYSERR;
        }

        /* Check for correct number of arguments */
        if (nargs > 1) 
        {
                fprintf(stderr, "exit: too many arguments\n");
                fprintf(stderr, "Try 'exit --help' for more information.\n");
                return SYSERR;
        }

        fprintf(stdout, SHELL_EXIT);
        sleep(10);
        kill(getpid());

        return OK;
}

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